drill 侧重进行有系统的，严格和重复的练习。
exercise 主要指为强壮体魄而进行的锻炼，也可指进行练习以保持已经获得的技巧。
practice 指把所学的理论或知识用于实践以获得技艺与技巧。
training 普通用词，泛指为从事某种职业而进行的身体或智力方面的训练。
discipline 既可指训练又可指为达到某种熟练程度而进行的约束。
参考例句
1. to drill boulders for inserting dynamite 在巨石上打眼以便装炸药
2. We have begun to drill another well. 我的已经开始钻另一口井。
3. Drill out cement. 钻穿水泥塞。
英英解释
n.
1. a tool with a sharp point and cutting edges for making holes in hard materials (usually rotating rap
2. similar to the mandrill but smaller and less brightly colored
3. systematic training by multiple repetitions
4. (military) the training of soldiers to march (as in ceremonial parades) or to perform the manual of v.
1. make a hole with a pointed power or hand tool
2. train in the military, e.g., in the use of weapons
3. learn by repetition
4. teach by repetition
5. undergo military training or do military exercises
